Ace the Cephalometrics OSCE 2026 – Unlock Your Path to Dental Mastery!

A downward/clockwise rotation of the occlusal plane typically results in a decrease in the ANB angle. The ANB angle represents the relationship between the A point on the maxilla, the nasion, and the B point on the mandible. When the occlusal plane rotates downward in a clockwise fashion, it often indicates that the mandible is moving in a more anterior direction relative to the maxilla. This anteriorization helps in reducing the ANB angle, which can reflect improved intermaxillary relationships or a decrease in skeletal Class II relationships.

While considering the context of skeletal growth and cephalometric analysis, a downward/clockwise rotation may influence other parameters, but the primary and most immediate effect on the ANB angle is a decrease due to the relative positioning of the maxilla and mandible shifting closer together.